Binding-strip.



A. F. PRESTON.

BINDING STRIP.

APPLICATION FILED JUNE 4. I915.

Patented June 6, 1916.

Fig.1.

configuration and sizes ALBERT F. PRESTON.

0F BOSTON, MASSACHUSETTS.

BINDING-STRIP.

Specification of Letters Patent.

Patented June 6, 1916.

Application filed June 4, 1915. Serial No. 32,241.

To a]? 10720211 it may concern:

Be itknown that I. ALBERT F. Pass'rox, a citizen of the United States.and resident of Boston. county of Suffolk. State of Massachusetts. haveinvented an Improvement in Binding-Strips. of which the followingdescription. in connection with the accompanying drawing. is aspecification. like characters on the drawing representing like parts.

This invention relates to an improvement in binding for reinforcing theedges of plane surfaced or sheet patterns.

Bindings of the type to which this improvement relates areusedparticularly in the boot and shoe industry. .In .the manufacture ofboots and shoes. patternsof the desired for the various parts of bootsand shoes are provided. These are made of cardboard. fiberboard andsimilar materials and are adapted to be superposed upon the material tobe cutusuall v leather. A knife is then passed around the edges of thepattern by an operative and the material thus is cut by hand. It isobvious that the pattern edge must be reinforced against the knife edgein order to protect and preserve the contour of the pattern. For thisreason. and also to presentan accurate edge guide for the cuttingknives.'it is customary to atlix a U-shaped metallic binding to theedges of such patterns. This binding is affixed to the pattern edge byholding it thereagainst and passing both between pressure rollersrevolubly adapted to bear on opposed sides of the binding. Vere fiatrollers employed for this purpose. the pressure would be equally appliedto the whole longitudinal area of the binding sides with a resultantlack of adhesiveness. To obviate such difficulty, the rollers havebeveled faces, presenting annular ridges somewhat back of their frontfaces. The clenching pressure is thus applied adjacent the inner edgesof the sides of the binding and slightly forces them into.

the pattern material. The resultis that a fairly adhesive attachment ofthe binding is effected yet an imperfection appears in the bound patternin that the sides of the applied binding are convexed from the edge ofthe pattern to the inner edge of the binding. due to the fact thatpressure is not ap plied by the rollers to such intermediary surface.Such binding convexity prevents the bound pattern from resting perfectlyand pattern are both.

flat and evenly upon the surface of the material to be cut. Further, asis of frequent occurrence. such ridged rollers in running past a cornerin a pattern make a relatively deep. transverse indentation in either anunprotected or a bound adjacent edge of a pattern corner. Suchdisadvantage and defect could be obviated by rollers but such means arenot practicable with the present binding as practically all retentiyityof binding is eliminated by their use.

The object therefore of this invention is to provide a novel binding forpattern edges adaptable to be used with flat or substantially flat.pressure rollers. Another object is to provide a binding strip having arelatively minute flange or rib thereon which is adaptedto be pressedinto the adjacent. surface of a pattern.

A further object is to provide a binding strip of the characterdescribed having a hairdened base and rib and relatively flexible s1 es.

Other objects of the invention will more. fully appear from thefollowing description and the accompanying drawings and will be pointedout in the annexed claims.

As illustrated, the metallic binding strip for the sake ofclearness,very greatly enlarged.

Figure 1 is a perspective view of afiat strip of metal: Fig. :2 is aperspective view of the binding after having the ribsformed thereon:Fig. 3 is a perspective view of the completed binding; Fig. 4 is asectional view of the binding as attached to a pattern edge.

In the drawings, a selected embodiment is shown in its formative stagesand as finally applied to a pattern edge. The metals commonly employedfor this purpose are brass and steel. Steel is often employed wheregreater durability and retentivity of the binding on the pattern edgeare desired.

This improved binding is preferably formed from fiat strip steel aportion of which is illustrated in Fig. 1. Retentivity of this novelbinding may be secured by means of a flange 0r rib formed on one side ofthe binding; however, in this preferred form, a 1011- gitudinalhair-like rib 1 is formed on each of tlie'sides 2 of the binding 3makingit doubly aflixed. And. while it may be variously located on the made byflanging or inwardly turning a. rel

the employment of flat I binding, it is very easilyatively small portionof the binding side at the edge. For example, the flat metal strip shownin Fig. 1 is drawn through a roller die which functions to roll out andturn upwardly the edge portions, forming the longitudinal rib 1.Hardening'of this rib isthus coincident with its formation. The

double ribbed binding is then passed through another set of dies which006peratively bend the binding, forming the sides; and at the same time,under pressure,

I roll and thus harden the base 4 of the binding. While not essential,it is preferable toshown in Fig. 4c. The ribs clench the faces of thepattern adjacent the edge while the hardened base 4 presents a smooth,durable, guiding surface to a cutting instrument passed along thepattern edge thus reinforced or armored. a

.It is obvious that this improved binding may be aifixed to the patternby feed and pressure rollers which have fiat or plane faces as, whenequal pressure is applied to the longitudinal areas ojLthe binding sidespositioned on the op sed pattern faces adjacent the edge, the r bs orrib will be forcibly pressed into the pattern material and the adhesionof the binding will be assured.

Should it be necessary to embed more deeply or forcibly the ribs in thepattern, the faces of the rollers may be provided with an an nularridge, formed by beveling away the roller faces therefrom only a fewdegrees from the straight angle. present convexity of the appliedbinding will be substantially eliminated, binding're- In such form, the

tentivity assured, and the disadvantages of the present ridged rollersreduced to a negligible minimum.

This invention thus provides a binding which may be applied to patternsby roll ers havingplane or flat-surfaced opposed faces. When applied,its hardened rib or ribs afford a high degree of tenacity, its flexible,divergingsides make it easy of positioning and attachment, and itshardened base presents a highly durable, wear-resisting surface.

Having fully described my invention, what I claim as new and desire tosecure by Letters Patent is: v v j 1. A pattern binding comprising a me-.tallic strip substantially U-shaped in crosssection bearing acontinuous, longitudinal rib projecting from one of the upwardly bentfaces thereof.

2. A pattern binding comprising a metallic strip substantially U-shapedin crosssection having a continuous, longitudinal, inwardly projecting,marginal rib thereon.

3. A pattern binding comprising a metallic strip substantially U-shapedin crosssection having a hardened base and relatively softer flexiblesides and means on said binding adapted to retain the binding on apattern.

4:. A pattern binding comprising a metallic strip, substantiallyU-shaped in crosssection having a hardened base and relatively flexiblesides and a continuous, inwardly projecting marginal rib on each of saidsides. Y

5. A pattern binding comprising a metallic strip substantially "U-shapedin crosssection' bearing continuous, longitudinal, parallel ribsprojecting from oppositely disposed faces of the upwardly bent portionsof the binding strip,

In testimony whereof, l jhave signed my name to this specification.

ALBERT F. PRESTON.

